Suzuki TR750 XR11 streetbike

[avb]

Nov 3, 2021 15:01:06 GMT 1 midlifecrisisrd said:

Done next to hee haw on this. Did get the generator off the end of the crank after a bit of a fight

Just had a call from Nova Race transmissions saying the close ratio conversion is ready

ITS BEEN 12 BLOODY MONTHS 😯

So once I pay the £798 ransom they will send it 😫

Steve

do they superfinish gearbox in the price?

[midlifecrisisrd]

Nov 3, 2021 19:25:01 GMT 1 avb said:

Nov 3, 2021 15:01:06 GMT 1 midlifecrisisrd said:

Done next to hee haw on this. Did get the generator off the end of the crank after a bit of a fight

Just had a call from Nova Race transmissions saying the close ratio conversion is ready

ITS BEEN 12 BLOODY MONTHS 😯

So once I pay the £798 ransom they will send it 😫

Steve

do they superfinish gearbox in the price?

I think the gears they supply are super finished

Its only 1st and 5th you get. 2nd, 3rd and 4th are out the standard box

As standard there is a massive jump to second then 5th is like an overdrive

Steve

[avb]

Nov 3, 2021 20:15:46 GMT 1 midlifecrisisrd said:

Nov 3, 2021 19:25:01 GMT 1 avb said:

do they superfinish gearbox in the price?

I think the gears they supply are super finished

Its only 1st and 5th you get. 2nd, 3rd and 4th are out the standard box

As standard there is a massive jump to second then 5th is like an overdrive

Steve

do you think theyd be any market for superfinishing at a reasnoble price

ive got my eye on a machine for the job

[midlifecrisisrd]

I think it's more of a race thing

May be more attractive on road bikes if it was more reasonable

Steve

[yamark]

Steve, love this build.
There are fewer and fewer firms to do this sort of work.
I'm at nearly 2 years to have an extended gearbox shaft made!

So keep pushing mate, following with interest 

Cheers, Mark 

[midlifecrisisrd]

Jeez Mark, that's some wait, thought mine was bad

The NOVA stuff turned up on Friday just before I was heading away for the weekend so only just opened it

Here are the lovelies 😃

Steve

[Tobyjugs]

It's took me around 2 years to get some parts made for my dry clutch.

[Mr Kipling]

Any updates on this beauty Steve......

[midlifecrisisrd]

Dec 23, 2021 17:09:59 GMT 1 Mr Kipling said:

Any updates on this beauty Steve......

Afraid not sir, very limited time on bikes of late and a few health probs knackering me unfortunately

I'm off next week so hopefully going to get some time on this and the LC

I'm determined to liberate the crank out the casings so it can go to Chris Appleby for rebuild and dynamic balancing to try and reduce the vibes. I've seen a few videos of him doing it and it's amazing how many holes he has to drill to match it all up

The only worry is it needs pressed apart, pressed back together with weights fitted instead of rods, balanced then pressed apart to fit the rods then pressed together again

Like 2 rebuilds worth of wear on the web/pins 😥

My other dilemma is whether to get the Swarbrick pipe kits welded up or take one to Alonze for dimensions and get some SS ones made

Got a crazy idea in my head that the headers could be snaked/crossed to make the pipe up each side shorter

Then again I may want to try the Swarbrick's first to see how it runs in case they need tweaking to move the power around 🤔

Need to get the cases in the frame first anyway so I can look at clearances

Steve

[oldbritguy]

Busy time ahead then Steve ?😉
Telly will be rubbish anyhow

John 🙂

[Tobyjugs]

The pipes idea sounds good. 

I've just seen some pipes that have been made for a Kwaka triple that echoes your idea. I will try and get a picture of them for you.

[midlifecrisisrd]

No work today so spent a few hours clearing the bench and the bomb site that was the floor

Engine removed from the cradle, bolts all removed and crank cases split 😀

First thing to say is: THIRTY THREE FECKIN BOLTS 😅

All came out easy other than the last M10. Thread was solid but you could feel the flex on the head. Impact wrench wouldn't sort it as the flex on the long bolt was stopping the shocks getting to the thread.

20 minutes with a blow lamp on it then a breaker bar and it finally loosened.

Thought I'd got away with all the screws untill one of the screws that holds the shift drum in buggered up 😭

Cross just tore out of it and it's the lower rear one so not easy to get a drill into, I'll deal with that another day

Good news is gear clusters and all innards look ok.

Even the water pump is free and smooth but I have a new one anyway

Steve

[oldbritguy]

Nice going Steve. That is a big lump to pull apart.
Always the same working on an old motor which has been lying undisturbed for a long time. Fingers crossed with every fastener.
I have every faith with the final cross head however I would not touch those barrel studs. Leave them to the specialists. 😉
John

[midlifecrisisrd]

Dec 29, 2021 15:54:41 GMT 1 oldbritguy said:

Nice going Steve. That is a big lump to pull apart.
Always the same working on an old motor which has been lying undisturbed for a long time. Fingers crossed with every fastener.
I have every faith with the final cross head however I would not touch those barrel studs. Leave them to the specialists. 😉
John

Yes, quite pleased with myself 😁

The studs I'm leaving for now. Going to see what they look like after I've ran a die down the threads and had it all vapoured. If they are solid enough they will stay

In the pic you can see I got the 2 knackered ones out and I have 2 good used replacements for them.

I'm confident they are mostly fine, only one is a little nibbled just under the thread but hopefully it isn't worse than it looks and it will be fine

If it has been eaten away too much I'll see if I can get another good original.

The stainless or Ti into cast alloy makes me nervous but not as nervous as I am about damaging the cases 😰

Steve

[midlifecrisisrd]

Called Chris Appleby engineering yesterday about the crank so going to box it up tomorrow and post away

4-6 week turnaround for rebuild and dynamic balancing

Need to get the wife's baking scales out and weigh the pistons

Steve

[midlifecrisisrd]

Did feck all, only just boxed the crank up 🙄

Now swithering where to send it as spoke to someone who had theirs supposedly balanced and he can't rev the bike over 6k as the vibes are so bad

Makes me wonder if it's been knocked off true in the post

Weighed the box it's in, 21kg 😱

Steve

[oldbritguy]

Wooden crate Steve with loads of padding inside. Worry is for the return journey.

Any good engine builder will understand the concerns about courier cack handedness and take the same precautions sending it back.

Those big GT motors don't rev too high in the first place but I would expect a comfortable 6k at least. Maybe your buddy has something else going wrong.

Worst case scenario would be a personal drop off and pick up. At least you would know it was safe then.

John

[midlifecrisisrd]

Jan 29, 2022 18:22:53 GMT 1 oldbritguy said:

Wooden crate Steve with loads of padding inside. Worry is for the return journey.

Any good engine builder will understand the concerns about courier cack handedness and take the same precautions sending it back.

Those big GT motors don't rev too high in the first place but I would expect a comfortable 6k at least. Maybe your buddy has something else going wrong.

Worst case scenario would be a personal drop off and pick up. At least you would know it was safe then.

John

It's packed in a banana box 🤣

I lined the bottom with plywood then and inch thick polystyrene sheet.

I then sandwiched the crank between 2 planks of wood that go diagonally across the box. It's a neat fit so can't move side to side and the crank ends point into the corners so 3 inch packed with polythene so well protected there.

Box then packed with polystyrene and rolled cardboard to fill the spaces up to the top of the crank then 5 layers of cardboard to fill the box up to the top edge before the top of the banana box slid on.

Then wrapped with pallet wrap and taped. Think that should do it 😂

Also found a guy from the kettle club who is in Durham and does cranks so i could post to him then collect in person as i can arrange work in Newcastle

Just means no balancing but then Suzuki made it that way and a 120 degree triple should in theory be smooth

The J/K crank which I have was heavier than the L-B

Not sure with the stories of vibrating TR's is down to using the later crank and lightening it further

Steve

[oldbritguy]

Think you have got it covered there Steve.
Not get much safer than that. As said it is the return journey I’d be worrying about 😂
John.

[Tobyjugs]

Once isaw a TR on the dyno that vibrated so bad that the fueling in the carbs was affected.

[midlifecrisisrd]

Eeeaaak 😱

[dusty350]

I get really paranoid about cranks in the post. Not just damage, but potential loss. Too many horror stories about bad handling by couriers, and parts disappearing. Dont forget, most wont insure bike/auto parts

Dusty

[midlifecrisisrd]

Tell me about it Dusty

Its easy enough to get stuff insured but it's what it costs

I just booked a courier to pick 2 pallets up from Mutts with the milling machine on them

Price isn't bad but only £25 insurance

Raising it to £1000 costs £46 just so they do their job properly and not lose or damage it 🙄

Steve

[philmill]

Slightly off topic, but, I used" Shiply" this week to get a set of expansion chambers for my GT750 shipped from Kent to me in Wales, I had my doubts but ended up paying 64 quid, insured for £500, picked at 3pm and delivered to me by DPD at 1030 the next morning. Not sure how they work that, wasn't collected by DPD and my payment when to some random Courier company. I'll certainly try them again when I have something big or heavy to ship.

Phil

[midlifecrisisrd]

Decided I hadn't threw enough money at Mutts so decided a decent pair of shocks for the TR were required 😂

Steve

[dusty350]

Very nice Steve
Got those shocks on the 400, and they are a quality item for sure

[midlifecrisisrd]

Feb 11, 2022 8:13:28 GMT 1 dusty350 said:

Very nice Steve
Got those shocks on the 400, and they are a quality item for sure

Took me a while to decide on them but yes they seem really well made (and spendy)

I was going to get Maxton to make a pair but they need the bike weight etc which is a long way off knowing

The frame builder said 400mm but was recommending cheapo hi level units which would no doubt sag quite a bit and when I bought other 400mm ones it looked too high

The longest yss that was a common size was 360mm (+5 so 365) so I searched through that list for large heavy bikes as there will be a fair bit of weight in this engine and not so slim me perched on it 😂

Also needed eye ends with ideally the bottom one being 10mm as the swing arm mounts are neat so not much clearance

Then looked at spring rates. As the shocks sit at quite an angle there will be more leverage

Suzuki GSX1400 spring was 20-30
Kwak ZRX1200 was 25-40
Honda CB1300 was 30-50

So I bought the Honda ones. They are all the same spring length so if too hard I can swap the springs for the zrx ones

If I need more length I can get extenders made like you did or as the top frame mount has 2 ride height choices I can make an adaptor bracket off the 2 mounts to mount the shock on

Just thought it better to have the right shocks on for the pipes getting made as the top pipe sits near them

Steve

[Tobyjugs]

Thats a very good idea to get the suspension sorted along with chain run before you get those pipes done. I've seen a pipe builder send two people away because there was not enough room to make the pipes correctly.
I would imagine the pipes will have a bit of "gurth" as well

[midlifecrisisrd]

Had word back on the crank.

Mains aren't bad, big ends perfect, 2 rods perfect but 1 rod has some marks where the small end rollers have been sitting

On a normal engine he said his advice would be to run it as is but as its tuned he said he had another mint used rod he could fit

End result - told him to rebuild all new bearings and rods 😬

Still miles cheaper than Grampians quote of £850 😳

Steve

[oldbritguy]

Good news Steve.
Another job off the list. Sounds like your man is on the ball and quite thorough in his assessment of components.
Good enough for normal use but not so on a tuned motor. Must be close. Get the old one on eBay lol.
Your affliction for collecting expensive parts sounds oh so familiar 😁
John.