Trials Australia Forums

I'm always interested in modified twinshock trials bikes and while looking through old photos, came across these photos I took in 2006 of an interesting bike. Photo taken at a Denman MCC trial at Martindale, NSW.

Yeh, they intrigue me too Dave.
Looks to have massive ground clearance.


Greg, in answer to your request, here's the comparative specs listed for TLR200/250 in that order:

W'base 1315/1315mm

Ground clear 300/310mm

Seat ht 780/750mm

Footpeg ht 380/395mm

Rake 26.5/24.5deg

Trail 86/78mm

Wt 88/90kg

Here's another interesting Australian twinshock creation

Hi Everyone,

JC1 wrote:Greg, in answer to your request, here's the comparative specs listed for TLR200/250 in that order:

W'base 1315/1315mm

Ground clear 300/310mm

Seat ht 780/750mm

Footpeg ht 380/395mm

Rake 26.5/24.5deg

Trail 86/78mm

Wt 88/90kg

Thank you John, whereabouts did you get those specs as all I could find as a google search was an old post on here of yours from 2014 stating the same thing for TLR 250 but not a comparison with TLR 200.

Obviously the wheelbase is variable, what do they use, maybe Centre of axle slots?

Ground clearance variation of 10 mm makes sense with my personal data because TLR 200 damper rods are 10 mm shorter than TLR 250. Coupling that with TLR 200 shocks being 10 mm shorter between centres than TLR 250 even though they are not true lengths because of forks and shocks are mounted on an angle, so I think close enough? Not knowing the ride height that they are working with is a bit like the wheelbase that is adjustable!

Seat height makes sense because TLR 200 has a padded seat.

Footpeg height makes sense as TLR 250 has very high footrests in standard trim and footrests do not interchange between models!

Rake Simply Does NOT make sense because my frame jig for reworking the steering angle on the BLOODY fits my TLR 200 frame which proves the steering head angle is exactly the same!

Maybe hype comes into the equation as I cannot see how the slightly shorter forks and shocks can change the steering angle, (same ammount both ends)!
.

Trail Does Not Make Sense as well, yes I realize Rake is different to Trail but it can't be different on both models for the same reasons I have just stated about Rake! Pretty sure the Triple clamps measure the same ammount of offset!

Both of my TLRs now have the same frame geometry modifications along with a couple of others that I have done, both of the others were TLR 250s, my TLR 200 is the first one that I have done. When you look at both bare frames side by side. The TLR 200 has extra brackets for repositioning the gear lever, a cup shape bracket in front of the top steering head bearing may be for steering lock and another bracket behind righthand side cover rear mount maybe for battery box? As yet I have not had a good look at a Reflex but I think the frame is very similar to the 1983/4 TLR 200s?

TLR 200 frame is slightly heavier than TLR 250, I assume because of the extra brackets.


David, custom bikes are the ones I find the most interesting, the YamJet in your last photo is nice to ride! Never know what's next but i would jump at the chance to ride the TY 175 powered Piuma!

Seeing we're on a roll with these modified Twinshocks, how about this one that seems to have a bit of a influence about it. That should hopefully please Greg Harding who often bangs on that I have something about bloody s.
Notice this one has a motor though, like the other two I posted up earlier also do

Nice ones Dave, keep them coming. The TY175 is rather radically modified but it looks good. Nice job, tho I wonder if they gave much attention to trail since it looks to be still using the TY triples, but with offset axle forks


Greg, I got them from Honda manuals uploaded to the web somewhere. Can't remember what site now. Thought it might have been the Honda onlytrial site but a quick check now didn't show them.

I'v always assumed wheelbase to be as delivered from the factory, ie with standard gearing and chain tension adjusted to factory specs. Which means of course; change sprockets, change wheelbase specs and I'd guess they're different for the 200 & 250.

I have long wondered about the diff rake/trail specs too since they're often said to be the "same frame". Perhaps the 200's specs listed are for the Reflex model. (Interestingly they are the same as for the TL250 too.) As we know the Reflex model had different forks & triples.

I've just checked part nos from the cmsnl site and TLR200 & 250 have same triples as you thought.

Frame nos are different but that could be just the extra brackets for the 200.
Swingarm nos are also different but that may just be to suit the diff hubs & brake plates.

Fork sliders (bottoms) are diff nos too which again may be to suit the diff hubs and brake plates which are also diff nos, but it might be worth checking the offset in the sliders Greg

I found another photo of that modified TY175/ TLR200 that shows the amazing workmanship

and yet another modified TY175

and something to excite Greg Harding - two s at the same trial!!!

Does anyone have an understanding for why "Basket Cases" has had nearly 12,000 views since the start of June but only four people have posted anything.