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Author Topic: Re: Coxylaads Road Bike Thread thing split off blog topic thingy  (Read 5460 times)

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Offline CoxyLaad

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Re: Coxylaads Road Bike Thread thing split off blog topic thingy
« Reply #244 on: 09:28 - 12 February, 2019 »
It was a rattle can, well 2 rattle cans.  I called into my local paint shop looking for some engine paint, he told me a very reputable engine builder he knows uses a BBQ paint and it works very well. I had no reason to doubt him as he wasn't actually selling me anything.

It has the high temp properties, cures with heat and is durable. Time will tell as to whether it will hold up to the british weather. 

When I sprayed it on I was a bit concerned as it looked brown! however when it dried it changed to a matt black.


anyways, attempting to keep some momentum I managed to get another hour in the garage last night.
The front engine mounts actually float in the frame and are clamped with pinch bolts. The original fame slider/spacers were old and rotten, so I used them to keep the internal surfaces free from being powder coated and made some more up:











Job done, the engine is now securely mounted, the rest of the rebuild can continue.
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Offline Sidestand

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Re: Coxylaads Road Bike Thread thing split off blog topic thingy
« Reply #243 on: 21:18 - 11 February, 2019 »
Did you use rattle can or a proper spray to paint the engine Coxy ?

And what colour did you use ?

Offline CoxyLaad

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Re: Coxylaads Road Bike Thread thing split off blog topic thingy
« Reply #242 on: 12:54 - 11 February, 2019 »
Yes my thoughts exactly, so I looked at the F800 engine. Redlines at 8.5k just like the tdm.

I'm not chasing power at all really. I just like the idea of using the later technology and seeing what effect if has. If I do it I am going to do it properly and manufacture some proper head to TB adaptors that match the profile of the tb mouth with the mouth of the engine inlet, which isn't round at all.
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Offline Rob the Nog

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Re: Coxylaads Road Bike Thread thing split off blog topic thingy
« Reply #241 on: 11:19 - 11 February, 2019 »
Dunno, you could argue that the smaller tbs have higher gas speed at lower revs providing better torque, but that doesn't hold true in my experience.

That was my thinking, since the TDM doesn't rev particularly high (for a bike engine), I thought maybe the wider TB's aren't needed as air flow doesn't become so restricted like it would with a higher revving engine, so they concentrated on the lower torque as priority instead.

Could just be the TDM was never meant to be marketed as a powerful bike, so they cut costs and just stuck TB's in that simply did the job though.

Just an assumption though, I'd be really interested to see if the bigger TB's make a decent difference and more importantly, would the difference be worth someone investing in the fettling for ;)

Offline CoxyLaad

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Re: Coxylaads Road Bike Thread thing split off blog topic thingy
« Reply #240 on: 11:02 - 11 February, 2019 »
Dunno, you could argue that the smaller tbs have higher gas speed at lower revs providing better torque, but that doesn't hold true in my experience.

Interestingly the super tenere still has 38mm tbs. Everything else is much bigger.  Having sat and mulled it over I think I am going to clean up and fit the stock tbs for now, mainly because of time constraints. I am going to have to make myself a fuel rail out of stainless steel. I think it's doable but it will take time and i want the bike roadworthy by March. The good thing is I can build the new tb setup off the bike and swap it over when it's done.
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Offline Readmarx

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Re: Coxylaads Road Bike Thread thing split off blog topic thingy
« Reply #239 on: 21:53 - 10 February, 2019 »
An old friend who had an NWS framed TRX had a YZF spare for the rear but kept the original on it for track use - 180 will look good on the TDM

Is it just cost that Yamaha would use 38mm?
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Offline CoxyLaad

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Re: Coxylaads Road Bike Thread thing split off blog topic thingy
« Reply #238 on: 12:35 - 10 February, 2019 »
Stock ones are a piddly 38mm. I haven't done the calcs but these would probably be able to flow 50% more air.

I am not chasing big power figures, however my experience with fitting a larger throttle bodies on the aprilia mille shown that the gains were everywhere. And they were 51mm throttle bodies so bigger again
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Offline Zippy

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Re: Coxylaads Road Bike Thread thing split off blog topic thingy
« Reply #237 on: 10:55 - 10 February, 2019 »
Looking good. What size are stock TDM throttle bodies?
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Offline Rob the Nog

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Re: Coxylaads Road Bike Thread thing split off blog topic thingy
« Reply #236 on: 10:02 - 10 February, 2019 »
Lovely work, nice inspiration for what I have ahead with the FJ.

Those TBs look perfect on there ;)

Offline Vu Ja Dave

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Re: Coxylaads Road Bike Thread thing split off blog topic thingy
« Reply #235 on: 00:26 - 10 February, 2019 »
Looks more Magenta than pink.  ::)

Offline CoxyLaad

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Re: Coxylaads Road Bike Thread thing split off blog topic thingy
« Reply #234 on: 23:13 - 9 February, 2019 »
At long last I have finally managed to get a day in the garage to progress the 900 project.

so, I finished painting the engine:



Did some more cleaning up of parts.







whilst I was there I replaced the swing arm bearings and one of the bearings in the suspension linkage

started to build it all back up:




I had a rear wheel from a YZF750 kicking about from an old track bike I used to own, offered it up, and its a direct replacement! happy days, I can now run a 180 rear tyre. only drawback is that its pink!




last thing I had a look at today turned out to be quite interesting. I was going to make a start on cleaning up the throttle bodies, they are a bit minging:



then just for the crack I decided to offer up the 42mm F800 throttle bodies on the engine:
They look so good. They may have to stay there!



I have the ignijet ecu so tuning it to the bigger throttle bodies will be a relatively straight forward process. Would be a shame not to do it now I have gone this far.


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Offline Readmarx

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Re: Coxylaads Road Bike Thread thing split off blog topic thingy
« Reply #233 on: 21:59 - 23 January, 2019 »
The “register” isn’t accessible to the public?
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Offline celticbiker

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Re: Coxylaads Road Bike Thread thing split off blog topic thingy
« Reply #232 on: 20:45 - 22 January, 2019 »
I've read about people like you.

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Offline Readmarx

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Re: Coxylaads Road Bike Thread thing split off blog topic thingy
« Reply #231 on: 19:52 - 22 January, 2019 »
That's the level of nerdiness I got to with the Yamaha and now the new Strumpet - I like to get to know my machine on an overly personal level...  ;D
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Offline CoxyLaad

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Re: Coxylaads Road Bike Thread thing split off blog topic thingy
« Reply #230 on: 17:27 - 22 January, 2019 »
naturally..... ::)
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