V4 Track Bike "build"

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endodoc

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Aug 25, 2015
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V4 motors are finally starting to pop up in a few places unfortunately, the frames are not. There were a couple of inquires with regards to acquiring one. There is now a nice solution for anyone looking to build a nice track bike. Tamburini is doing a nice Trellis frame in 4130. I will be building this up sometime this summer depending on parts availability from EU.
v4-telaio+supporto filtro (7).JPG
 
Hi Endo, quick question on the Tamburini frame. Have you seen any production examples yet, as judging by some of the pictures I have seen, the weld quality seems a little suspect. Certainly not in the same league as Pierobon for instance.

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TOPOLINO, yes I have and I agree with your assessment on the construction. The prototype frame in the photos is probably not a stellar example of what comes out of Tamburini but I would agree, that 4130 being fairly easy to weld both from a mechanical perspective and an aesthetic one that this thing is not where it could be. They are painting the shipped versions but that does not diminish the point. They could have done a better job with the Tig torch.
 
Hmmm. Maybe. That trellis frame for the 99 didn’t go very far. Did the even sell any of those things outside the XR build? I don’t think they moved any of the double sided swing arms either.
 
All of the manufacturers engineer flex into their frames to improve feedback/feel/stability. The R frame is a good example over the base V4 frame. Creating a Trellis frame may reduce weight, but are you sure it will improve track times? I would think the Trellis manufacturer would not have near the resources as Ducati for both computational modelling as well as track R&D testing.
 
Good point however you would have to fairly investigate the operation that made the frame. There are many aftermarket suppliers of performance components that do a pretty good job at competing with what the “factory” puts out. In this case you would have to ask Tamburini and talk to their engineers who I’m quite sure have covered the very salient points that you bring up. I’m not sure but I would guess they didn’t just slap a set of tubes in a jig without looking at the engineering dynamics of the original platform but who knows. Tamburini is quite involved in Motorsport in EU. I use their race spec harness in the things that I build. F-1 quality but I can’t speak on their metal fab capabilities.
 
endodoc said:
Hmmm. Maybe. That trellis frame for the 99 didn’t go very far. Did the even sell any of those things outside the XR build? I don’t think they moved any of the double sided swing arms either.
Click to expand...
I certainly do not think they were big sellers, Boulder Motorsports was just trying to sell their X85R build that Tommy Bridewell // Scot Russell raced for 100k
https://www.ebay.com/itm/2018-Ducat...=true&nordt=true&rt=nc&_trksid=p2047675.l2557I know someone that has the DSSA on a 959, which I think is the only one in the country. He got it for a song.
But yes think the resources + engineering that goes into a project like that is increasingly not worth it to them. They do well with their standard SBK bits and paddock kit
 
As an eBay Associate we earn from qualifying purchases.
I looked into the swingarm and it doesn’t have a price. So you know what that means lol.
 
Yea it’s north of 6k I believe. They have a retrofit program, send in your arm and I think 3k and it’s done. A much more attractive alternative. I did get a few laps on an 1199 with the 40mm extension. Definitely makes a difference in stability and keeping the front down. Not needed on the street but it looks cool. Didn’t I read that the V4 SL has a proposed longer swing arm than stock?
 
Yes so the lower swing arm is the one Kevin has for sale. You will notice the relief cuts in the lower section. That I believe is engineered to be quite flexible and probably has a weight limit as well as an increased inspection cycle. I would not run that on the street or if you are like me, north of 200lbs
 
endodoc said:
Good point however you would have to fairly investigate the operation that made the frame. There are many aftermarket suppliers of performance components that do a pretty good job at competing with what the “factory” puts out. In this case you would have to ask Tamburini and talk to their engineers who I’m quite sure have covered the very salient points that you bring up. I’m not sure but I would guess they didn’t just slap a set of tubes in a jig without looking at the engineering dynamics of the original platform but who knows. Tamburini is quite involved in Motorsport in EU. I use their race spec harness in the things that I build. F-1 quality but I can’t speak on their metal fab capabilities.
Click to expand...
I find it interesting that you would be looking to do a build with this piece without knowing the answer to this, either by having the manufacturer answer this question on the engineering they did behind it or by people with actual track experience with the piece where they can list the real world benefits of the piece. Unless your intent is to test it for performance due to lack of performance data, purchasing it without knowing this essentially becomes a "bling" purchase.

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Additionally the frame is for “off highway use only” you can’t register it. Usually if I’m not mistaken because I don’t know if I’ve actually used the word “bling” bling is for people to look at. Kinda defeats the purpose of the definition if ya can’t even get the bike to Starbucks in the first place. I’m building a V4 for the track and I’m going to fall down a lot. Pretty simple. I suspect all the guys who are not running Ducati Rearsets and top clamps had better remove that stuff. They are probably not tested like the Ducati pieces.
 
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