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Post by steeley on Sept 22, 2019 7:46:58 GMT 1
Nice.
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Post by Mr Kipling on Sept 23, 2019 14:25:29 GMT 1
Hi Tony , really pleased you got to the the stage of first fire up !!!!! you think its loud now wait till u ad the dry clutch to the mix , well done mate , Atb….
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Post by Tobyjugs on Sept 23, 2019 19:35:32 GMT 1
Hi Tony , really pleased you got to the the stage of first fire up !!!!! you think its loud now wait till u ad the dry clutch to the mix , well done mate , Atb…. Hi Mr K the dry clutch and cooling water mods are the last things to do on the engine. |
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Post by mouse on Sept 24, 2019 6:57:52 GMT 1
Hey Tony
that sounds fantastic, really keen and purposeful, brilliant, keep going!!
Mouse
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Post by dusty350 on Sept 24, 2019 10:44:52 GMT 1
Great to hear it alive !! You must be really pleased  Well done Dusty |
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Post by Tobyjugs on Sept 25, 2019 0:05:40 GMT 1
Tonight i managed to talk Piet the tuner into doing a small job on the engine casing. On a power valve engine case there is room for a bolt next to the gear change shaft this was probably made as the correct casing is made of plastic. The 4LO casing doesn't have this. The 4LO casing i am using has been drastically chopped up so i thought it would be a good idea to use this hole to give the gear change area a bit more stiffness. First half an engine casing was tightened up to the table and the centre of the hole was determined. The side casing was then fixed to the engine casing and a hole was drilled.  Here is the hole showing the threaded hole underneath.  A small bush was made and put into the hole this was held in place with a bolt and welded on both sides of the casing. If you look carefully you will notice a crack. This has always been there, the casing was badly broken and re-welded when i got it.  After it was welded it was put back on the milling machine and the weld was tidied up. 
This will get a little more attention when i paint it. The next thing to do on this casing is to fix a sealed bearing to support the offset sprocket. |
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Post by Tobyjugs on Oct 6, 2019 19:30:23 GMT 1
Saturday i did some dyno runs but unfortunately the bike wouldn't work properly past 8,000 rpm.
There was simply no reaction from either the ignition or carb changes.
It was making just under 70 PK and just over 60 N/M of torque before it was hitting a brick wall.
I will have to do some checks to see what the problem is. I'm hoping it is the ignition and not the miss match of the cylinders used and the pipe design as these pipes were made for the more aggressive Cheetah port timing.
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Post by Tobyjugs on Oct 18, 2019 15:45:08 GMT 1
A quick update. I found a small problem with the ignition which was causing the ignition to have a very small range, Still not right but getting there. The engine is making 75nm torque and 73 PK before the clutch starts to slip at 7,000 rpm.  The clutch is fairly standard except for Barnes clutch plates and 3 750 TZ springs +3 standard springs. The barnes plates came with heavy duty springs. I decided not to use these as i thought the Assassin cylinders would not be very potent. I have a lock up clutch presently fitted to Kees's bike which he used for sprinting. A forum member might have an eight plate set up. I'm not so keen on using the heavy duty springs. I think i might have to make a reserve tank with two big holes for feeding the carbs and more capacity as a litre doesn't last long. The wheels have come back from the painters and they look nice, new and shiny.  I need to fit a 18 or 19 tooth offset front sprocket does anyone know of any companies? The offset is too big for NK racing and i had to sit down when Talon racing quoted me a price. (probably me living in a bubble when it comes to offset sprockets) |
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Post by oldbritguy on Oct 18, 2019 16:24:14 GMT 1
Wheels look lovely Tony and will look great on the bike. Building real one off specials like this one was never going to be without it's challenges. I have every faith you will overcome though  I also am sure someone will be able to manufacture or machine up a sprocket for you, especially in Holland. They quite like their radical cuatoms there if I remember correctly. |
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Post by steeley on Oct 18, 2019 18:38:33 GMT 1
A quick update. I found a small problem with the ignition which was causing the ignition to have a very small range, Still not right but getting there. The engine is making 75nm torque and 73 PK before the clutch starts to slip at 7,000 rpm. The clutch is fairly standard except for Barnes clutch plates and 3 750 TZ springs +3 standard springs. The barnes plates came with heavy duty springs. I decided not to use these as i thought the Assassin cylinders would not be very potent. I have a lock up clutch presently fitted to Kees's bike which he used for sprinting. A forum member might have an eight plate set up. I'm not so keen on using the heavy duty springs. I think i might have to make a reserve tank with two big holes for feeding the carbs and more capacity as a litre doesn't last long. The wheels have come back from the painters and they look nice, new and shiny. I need to fit a 18 or 19 tooth offset front sprocket does anyone know of any companies? The offset is too big for NK racing and i had to sit down when Talon racing quoted me a price. (probably me living in a bubble when it comes to offset sprockets) Hi , give these folk a call sprockets unlimited 01386831341 |
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Post by Tobyjugs on Oct 18, 2019 20:51:56 GMT 1
Hi Steely i just visited the web site. A couple of months ago the man in the company has died and the partner does not know if she will carry on with the business. Thanks for the tip though.
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Post by Tobyjugs on Oct 18, 2019 20:55:20 GMT 1
Wheels look lovely Tony and will look great on the bike. Building real one off specials like this one was never going to be without it's challenges. I have every faith you will overcome though I also am sure someone will be able to manufacture or machine up a sprocket for you, especially in Holland. They quite like their radical cuatoms there if I remember correctly. Your not wrong there mate. Marrcel has just given me an address in Holland. I will phone them up tomorrow and let everyone know how i get on. |
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Post by 2banger on Oct 18, 2019 21:05:05 GMT 1
Think my talon 18t 19t 10mil offset were about 120 each delivered
Lock up clutch will eliminate any slip, you can remove weights from clutch arms as not needed
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Post by Tobyjugs on Oct 18, 2019 21:52:23 GMT 1
Think my talon 18t 19t 10mil offset were about 120 each delivered Lock up clutch will eliminate any slip, you can remove weights from clutch arms as not needed I got quoted that without the vat. The lock up clutch is the ball bearing stealth type and it works great in the tuned 4LO engine. |
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Post by wallcraft on Oct 18, 2019 22:37:41 GMT 1
Think my talon 18t 19t 10mil offset were about 120 each delivered Lock up clutch will eliminate any slip, you can remove weights from clutch arms as not needed I got quoted that without the vat. The lock up clutch is the ball bearing stealth type and it works great in the tuned 4LO engine. What's the draw back runnng the stealth set up, heavy lever? Do you use the standard springs? Does the lever get heavier the higher the revs? |
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Post by Tobyjugs on Oct 18, 2019 22:50:39 GMT 1
I got quoted that without the vat. The lock up clutch is the ball bearing stealth type and it works great in the tuned 4LO engine. What's the draw back runnng the stealth set up, heavy lever? Do you use the standard springs? Does the lever get heavier the higher the revs? Thats a good question! When i fitted it i did a few small sprints and did notice any difference and since then i nave only pootled around on it a few times and never remarked that it felt heavy. I asked Kees what it was like during the sprints but he told me he didn't use the clutch and driving around it didn't feel any heavier to him, but he hasn't been a maniac this year. I,m not a fan of the washing machine widow and bulky knuckles so i do prefer the stealth type. I fitted the weakest springs i had into the clutch assembly. The engine makes around 65 hp so not a real test for such a clutch. |
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Post by wallcraft on Oct 18, 2019 23:24:44 GMT 1
Cheers thanks for that, my Athena 421 is doing 75bhp and 43lbs torque it's got uprated clutch plates and steels and 3 TZ 750 springs, slips like a bast**** when you hit the 7000- 8000 range. Not so bad when fully warmed up but not ideal hence looking at the stealth set up. I to dislike the ugly weighted lock up affair.
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Post by Tobyjugs on Oct 18, 2019 23:37:46 GMT 1
Cheers thanks for that, my Athena 421 is doing 75bhp and 43lbs torque it's got uprated clutch plates and steels and 3 TZ 750 springs, slips like a bast**** when you hit the 7000- 8000 range. Not so bad when fully warmed up but not ideal hence looking at the stealth set up. I to dislike the ugly weighted lock up affair. This quote has cheered me up a bit i'm glad i'm not the only one with a slipping clutch. 75 n/m is approximately 55ft/lbs. I might have to adjust the engine as the torque figure seems too high. I will be able to see this once the clutch is sorted. |
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Post by wallcraft on Oct 18, 2019 23:50:33 GMT 1
Nice, definitely an arm puller then, and then some👍
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Post by 2banger on Oct 19, 2019 11:27:17 GMT 1
I got quoted that without the vat. The lock up clutch is the ball bearing stealth type and it works great in the tuned 4LO engine. What's the draw back runnng the stealth set up, heavy lever? Do you use the standard springs? Does the lever get heavier the higher the revs? Wiseco clutch basket on 2.68 s/cuts , ebc heavy duty springs and plates with lock up clutch no weights Lever to pull very easy working off brembo perch and lever venhill made to measure clutch cable plastic insert |
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Post by veg on Oct 29, 2019 17:26:44 GMT 1
Thats some decent power and torque, love how this is progressing.
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Post by Tobyjugs on Oct 29, 2019 23:16:49 GMT 1
Thats some decent power and torque, love how this is progressing. Hi Veg thanks for the compliments but I think I might be adjusting some of the engine parameters, but first I need to get the clutch sorted. This will probably be in the Xmas period because I'm on a short family break in Plymouth. After that I will be working too much. I have been offered some carbon discs. It would be nice for bragging etc, not sure if any good for an amateur on a track day. That said with the lightweight wheels and possibly carbon discs it will bring the weight back down. |
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Post by midlifecrisisrd on Oct 30, 2019 18:44:09 GMT 1
Coming along nicely sir
As for the offset sprocket costs that's a shocker
I'm surprised there aren't more available with all the specials around
NK only do 4.5 and 9 now I think
Think I'll be getting my local engineer to make my next one
I have one on my 385 which is obviously made with 2 sprockets. One with the outside machined off and the other with the inside machined out and bit of heavy tube between them and all welded up
Steve
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Post by Tobyjugs on Oct 31, 2019 2:15:45 GMT 1
Coming along nicely sir As for the offset sprocket costs that's a shocker I'm surprised there aren't more available with all the specials around NK only do 4.5 and 9 now I think Think I'll be getting my local engineer to make my next one I have one on my 385 which is obviously made with 2 sprockets. One with the outside machined off and the other with the inside machined out and bit of heavy tube between them and all welded up Steve Marrcel gave me an address in Holland with a quote of 70 euros. Hopefully it will be ready soon. |
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Post by Tobyjugs on Oct 31, 2019 18:54:20 GMT 1
I have now sourced an 8 plate inner hub for the clutch. Before I make an offer has anyone have any experience of an 8 plate clutch?
How well did it perform?
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Post by midlifecrisisrd on Nov 1, 2019 19:58:05 GMT 1
I have now sourced an 8 plate inner hub for the clutch. Before I make an offer has anyone have any experience of an 8 plate clutch? How well did it perform? If it's Hinson I've heard people complain they have to file it to get it on the splines I nearly bought a full Hinson kit but was put off by people complaining that for £600 it should be a straight fit Did Yamark not do an extra plate in his triple? Stevr |
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Post by Tobyjugs on Nov 4, 2019 12:28:46 GMT 1
Thanks for the warning about the Hinson Steve. Pedro also warned me, but told, once cleaned up they are good to go.
The one i found is second hand so should fit.
I will have to have a run through Yamarks thread, normally i don't forget mods like this.
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Post by Tobyjugs on Nov 16, 2019 23:27:56 GMT 1
In the summer i bought a fairing for my bike which when i fitted it i took an immediate dislike to. In my eyes it looks like an elephant has sat on the front of it and squashed it. luckily i can interchange the nose part so i will change this for a standard piece. As you can see below it was marked with some tape with the idea of maybe cutting it on the marks  The man that will be painting it was all for showing a bit of the chassis rail and i was of the opinion the fairing would look too skimpy if cut. I asked one of the cafe racer crowd if he could photo shop the lines made on the fairing.  I was surprised at the result and changed my mind about the fairing being too skimpy. He then went a bit further and sent me a full paint job which he envisaged himself (nothing to do with me) 
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Post by donkeychomp on Nov 16, 2019 23:54:24 GMT 1
Dunno about the paint job but the fairing now looks brilliant!
Alex
(well...I do know about the paint job lol)
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Post by Tobyjugs on Nov 17, 2019 7:18:04 GMT 1
Out of interest what do you think
Show a piece of the chassis rail or not?
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