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Post by muttsnuts on Jun 13, 2020 21:15:08 GMT 1
Been mad busy for last 8+ weeks, but inbetween all of the madness I had a chance the other week to test out one of the new engines that I've been building for a customer, I would have posted up the initial results sooner, but stupid photof**ket shagged it all up, so now using imgur Anyway, initial results look promising, hit 100bhp bit sooner than I expected (8150rpm), not complaining though !  And the 100bhp at 9000rpm has been knocked out of the park.......  There is still lots to test and develop, but we are going to get some miles on the LC first (yes its in an LC  ), then we will run with bigger carbs and a new ignition system I've been working on, then we have 5 other pipe designs to test and then I might think about doing abit of port work ...... Watch this space........ |
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Post by donkeychomp on Jun 13, 2020 21:36:51 GMT 1
Woah! Some serious power there. What capacity is the engine?
Alex
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Post by muttsnuts on Jun 13, 2020 21:38:07 GMT 1
Woah! Some serious power there. What capacity is the engine? Alex 535cc's |
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Post by donkeychomp on Jun 13, 2020 21:41:56 GMT 1
That is some very impressive work Dave.
Alex
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Post by tony2stroke on Jun 13, 2020 21:45:19 GMT 1
WOW!!!!!!
That must be like sitting on a rocket, specially when you consider power to weight ratio.
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Post by Tobyjugs on Jun 13, 2020 21:46:15 GMT 1
A great curve, one for the touring club and one for the boy racers?
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Post by Deleted on Jun 14, 2020 1:38:36 GMT 1
That’s cheating, 535 eh lol
That’s some impressive bit of kit, that’ll lengthen your arms a bit
That’s power low down too is incredible
mass production next?
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Post by JonW on Jun 14, 2020 3:26:42 GMT 1
Very nice Dave!
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Post by steeley on Jun 14, 2020 5:23:05 GMT 1
Nice .
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Post by rigga on Jun 14, 2020 7:40:19 GMT 1
Wow, that's gonna rip.
At 6k its making standard power, then hell kicks in.
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Post by oldbritguy on Jun 14, 2020 7:58:47 GMT 1
That is impressive Dave
Someone is gonna be real happy with that. Std chassis might complain a bit though lol
John
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Post by jon on Jun 14, 2020 8:39:21 GMT 1
That is impressive Dave Someone is gonna be real happy with that. Std chassis might complain a bit though lol John +1 Just what I was thinking. Very impressive figures, but can you use all that power in an LC frame? Jon |
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Post by Deleted on Jun 14, 2020 8:58:58 GMT 1
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Post by headcoats on Jun 14, 2020 10:05:07 GMT 1
Needs a full story this, and lots of piccies !
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Post by Tobyjugs on Jun 14, 2020 10:13:21 GMT 1
Great looking bike and Johnny is also a fountain of knowledge. |
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Post by howard on Jun 14, 2020 11:01:07 GMT 1
You're going to need a service receptionist soon , I'm free !
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Post by muttsnuts on Jun 14, 2020 11:57:57 GMT 1
Thanks guys, I won't go into too much detail as its upto the customer to decide if they want the details divulging (they are on here) The engine is a NON PV engine, 73mm bore cylinders, 10mm stroke (as per Phil mentioned, but is a very different engine to Johnny's), the engine has cost a fortune as everything is not only brand new, but a lot is billet, the crank will rev to 12k if required, the crank bearings have been massively uprated to allow for this The LC frame has been braced, as has the owner !!  - his intial response on his first test ride was "It goes well, fooking dangerous TBH !! " - he hasn't let it rip yet as it needs bedding in and we want some steady miles on it while we check everything is working as planned. At the moment its running 35mm carbs, we plan on trying some 38mm's and also the new ignition system which has a flywheel that only weighs 300grams, current flywheel is 650grams (Yamaha one is 1560grams), its running an 8 plate clutch with light springs (more on that another day as I may start making these to sell) We have another 5 sets of exhausts to try on it, each having a different characteristic, the aim is to have 2 specs, one for big power, target is 120+bhp the other is to have huge mid range (think we might have hit that one already, but time will tell !) The intial tests are promising, engine temps are staying very low (54 to 60 deg) and I have a new head design in the pipe line, which should reduce temps by 6 to 8 degs all being well, but again, its time and money, none of this development is cheap and I only have so much time and money to throw at these new parts etc Its also running on oil pump !! Watch this space for more updates, or check out the "Malton Dyno Club" FB page which is where I publish all of the developments and tests etc |
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Post by nelly on Jun 14, 2020 12:15:15 GMT 1
Crikey! You are a Wizard that is very impressive mate👏🏻👏🏻👏🏻👍🏻👍🏻
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Post by veg on Jun 14, 2020 12:28:26 GMT 1
So the question is whose Spartacus? It isnt me!
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Post by headcoats on Jun 14, 2020 12:32:10 GMT 1
He'll be the one with a nervous twitch !
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Post by rigga on Jun 14, 2020 14:00:57 GMT 1
Wish it was me too, but alas its not.
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Post by mangocrazy on Jun 14, 2020 19:16:37 GMT 1
So that motor goes from making 55bhp at 6250 rpm to making 110bhp at 8750 rpm. The power doubles in the space of just 2500 rpm.
That's just ballistic. I salute you sir. And I want nothing to do with the rider's undercrackers
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Post by shaunthe2nd on Jun 14, 2020 19:27:30 GMT 1
We now know what you have been doing during lockdown! That looks awesome, some serious power. Great work Dave.
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Post by bigdork on Jun 15, 2020 3:39:15 GMT 1
Amazing, sure to bring some interesting moments in lower gears when it does hit about 6500.
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Post by flames on Jun 17, 2020 19:52:55 GMT 1
Fantastic........i wish building a banshee motor was more than just a pipe dream for me.....
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Post by Deleted on Jun 17, 2020 20:00:04 GMT 1
TBH I'd be happy to lose 20bbhp at the top and have 20bhp more at 4k. That much power increase will make it un-rideable without some sort of electronic intervention. It will either be smacking you in the face and making you shut off or trying to highside you as it spins up and dumps you off in a heap. Make a good drag engine or speed record thing.
Like you say, lots of work needed
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Post by flames on Jun 17, 2020 20:19:01 GMT 1
TBH I'd be happy to lose 20bbhp at the top and have 20bhp more at 4k. That much power increase will make it un-rideable without some sort of electronic intervention. It will either be smacking you in the face and making you shut off or trying to highside you as it spins up and dumps you off in a heap. Make a good drag engine or speed record thing. Like you say, lots of work needed I would certainly love to be the one trying to tame her without the electronic intervention ' though. |
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Post by muttsnuts on Jun 17, 2020 21:11:22 GMT 1
TBH I'd be happy to lose 20bbhp at the top and have 20bhp more at 4k. That much power increase will make it un-rideable without some sort of electronic intervention. It will either be smacking you in the face and making you shut off or trying to highside you as it spins up and dumps you off in a heap. Make a good drag engine or speed record thing. Like you say, lots of work needed LOL - Phil I was going to bring it to Blyton and get you to rag it around to see how you get on with it !!! - would be interesting on a small circuit |
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Post by Deleted on Jun 17, 2020 21:23:30 GMT 1
I think the only way to ride it would be keeping the motor above 8k. Not a problem for me as I have no mechanical sympathy. Happy to give you some feedback as long as it's dry and it's wearing some super super super sticky tyres......
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Post by rigga on Jun 17, 2020 22:20:02 GMT 1
I think the only way to ride it would be keeping the motor above 8k. Not a problem for me as I have no mechanical sympathy. Happy to give you some feedback as long as it's dry and it's wearing some super super super sticky tyres...... And the rider some nappies  |
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), then we will run with bigger carbs and a new ignition system I've been working on, then we have 5 other pipe designs to test and then I might think about doing abit of port work ......
- his intial response on his first test ride was "It goes well, fooking dangerous TBH !! " - he hasn't let it rip yet as it needs bedding in and we want some steady miles on it while we check everything is working as planned.
