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About hdscarbro

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    David Scarbro

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  • Bike
    TRS RR 125cc

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  1. Interesting. I'll inquire. Thanks.
  2. I'm looking to make the engine a bit more stall resistant. I'm a 63 and have been riding trials for a hand-full of years. Prior to the TRS, all of my trials experience was on a ty175. The ty, by comparision, is impossible to stall. I'm hoping that with some percentage more flywheel mass, there's a sweet spot. A place where the engine is less likely to stall, but not too sluggish either.
  3. I've been pining for more flywheel mass on my TRS125. A commercial flywheel weight is not available. Here's the solution I came up with. On my 125, there's about 5mm space between the flywheel and the crankcase. I machined a 4mm disc from mild steel that attaches directly to the back of the flywheel via tapped holes added to the flywheel. I haven't ridden the bike too much yet. My first impression is that perhaps for me the weight should be a bit less. This one weighs about 11oz. Does anyone know what is typical for a 125?
  4. You're right. I checked with my local TRS dealer. For all displacements, he said sales of the ONE models have dropped to almost nothing since the RR models came out. Because there's only a $600 difference, customers are going for the RR. He said a ONE model can be special ordered for $1000 non-refundable deposit and 6-8 week lead.
  5. The 125 exists only as the "ONE RR" model. It's my understanding there is not currently a 125cc ONE (base) model. http://www.trsmotosusa.com/2018_one_125cc.html
  6. I hope to. Parked next to a group of guys from upstate NY. It's an incredible place to ride. Well worth planning to stay for an extra day or two.
  7. I ordered a TRS 125 yesterday and should have it in a week or so. I see you're in NY, I'm in MA. If we cross paths, you can try mine. Are you planning to attend any of the New England Trials Association events this season? There's a couple in NY (Hoosick & Northville).
  8. I rode the 125 at Trials Training Days in Tennessee recently and I am enamored. I'm in my early 60's and have been riding trials for several years on a ty175. I've ridden several other modern bikes and this is the only one I've ridden this I can see owning. I found the engine to be torquey, with considerably more power than my Yamaha. It's a surprisingly easy bike to ride. I overheard one expert rider make similar comments in his assessment. For me, it is likely more bike than I'll need for the trials skills I'll develop in this lifetime. :-)
  9. I put an extension lever on my ty175 from tyoffroad. It's a noticeable improvement. Using a kitchen scale to measure the actuation force, it lightened the pull by about 15 percent. The pressure required to push the clutch lever fully open went from about 7lbs to 6lbs.
  10. I just installed the clutch cover from a yz125 on my ty175. With the yz125 cover, oil starts running out of the overflow hole at about 500ml (even after distributing the new oil around the crankcase). The fill hole is in a different location and there is no dipstick with the yz125 cover. Instead, it has an overflow hole located near the front of the case and below the primary gear on the crankshaft. Looking at the dipstick on the ty175 clutch cover, it appears the oil level should be at about the top of the kickstarter shaft. This appears to be (more or less) where the overflow hole is located in the yz125 clutch cover. The yz125 cover is more compact because there's no space for the injector pump drive gear, so guess this makes sense. I'm hoping to get confirmation that around 500ml is the right amount of oil for the ty175 with a yz125 clutch cover. Any help?
  11. I've been using Spectro Clutch Saver in my two ty175's. There's a moderate amount of drag when the engine is cold in one of them. Hardly any drag with the other one. I think that I used a surface plate and sand paper to dress the plates in the better behaving at some point in the past to insure they were flat. Yamaha Enduros from the same era as the ty175 had special rubber bands to keep the plates from sticking together.
  12. hdscarbro

    Kick Starter

    I welded mine and it's held (knock on wood). Before welding, I ground a "V" at the crack and filled the "V" with several passes of weld. You can still purchase the kick starter assembly. Not cheap, but fortunately still available.
  13. I participated at Unadilla and was surprised by the small size of the trials field. I agree with the earlier sentiments that it is unfortunate AHRMA is unwilling change to allow more old bikes in their trials events. At Unadilla, there were at least half a dozen TLR200's being ridden around. I contacted Debbie Poole (AHRMA trials coordinator) and suggested that some of these bikes might have entered had the rules allowed them. Haven't heard back. I don't understand why the window of what is "historic" isn't periodically be adjusted to reflect the passage of time. My understand is that this happened in MX and now the "post vintage" classes surpass the others in participation. Certainly, parts availability and the increasing rarity (and cost) of vintage MX bikes drove the decision to do "post vintage". AHRMA needs to do the same for trials. Kudos to Gordon for all the work designing the sections and organizing the event. It was big fun for all.
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