October 1Oct 1 I have a Tube-Type IRC TR-011 tire ordered to replace the very old, cracking, and worn Dunlop on my 1974 TY250 project. Do most people run a "regular thickness" inner tube, or the thicker (and heavier) 3mm/"heavy duty" tubes? I don't like the weight of the heavier tubes, but hate pinch flats even worse, where I'd suppose the thicker tubes might be better in that department.I'll be running 2 rim locks. What is the reasonable tire pressure range for a tubed tire like this?Sorry for this question, but the only other experience I've had with Trials tires was on my 2010 Gas Gas 280, which was the tubless rear, and a Pirelli MT-43/Nuetech TUBliss on my old KTM 300.Thanks,Jimmie
October 2Oct 2 Author 4 hours ago, RonH said:Hey Mr Neutron , would you be willing to post a photo or two of your bike. I used to have a 74 TY250 and am looking for another. I just went riding with a guy earlier this week who had one. They’re really great bulletproof bikes.Yeah, I'll try to post a couple of photos. My phone and this laptop are currently "not on speaking terms", so maybe some old pics......The picture of "the yellow bike" are after I first got the bike in May. I had to tear the motor out to repair a broken upper rear motor mount, so I repainted the frame white. This bike had A LOT of problems, issues, and stuff needing repaired and replaced. It still has a lot of stuff that needs addressing to be a reliable ride, but I'm slowly getting these things taken care of. Needs a front tire, shocks, handlebars, and other nagging little things. I put on a Clarke Racing white plastic tank to deal with rust and leakage issues). I replaced the cracked fenders. I have a new side panel (in white) coming, and just made a seat and seat base (very ugly stuff), and a very ugly skid plate, which I have no pictures of. I may try posting the newer pics from my phone, if possible......Tr1AL, Thank You So Much for your help here. Think I'll go with the IRC heavy Duty tube, and hopefully, not have any issues with pinch flats........ Will try to add another newer pic later.Jimmie Edited October 2Oct 2 by mr neutron
October 2Oct 2 Author I think I've posted too large of files in the post and photos above, perhaps? Something is keeping me from posting the newer photos I took yesterday. I get some sort of file limit size message.Anyway, I'm grateful for the opinions and help here on the matter of what tube to run. Thanks!Jimmie
October 2Oct 2 4 hours ago, mr neutron said:I think I've posted too large of files in the post and photos above, perhaps? Something is keeping me from posting the newer photos I took yesterday. I get some sort of file limit size message.Anyway, I'm grateful for the opinions and help here on the matter of what tube to run. Thanks!JimmieThanks for posting the photos. Awesome bike!Regarding your problem with the photos: There is a limit you can post unless you’re a paying member. However, you can still post all the pictures you want if you link them to a posting website like Flickr or Imgur.Oh yeah, do you still have the fiberglass seat pan? I’d like to buy it if at all possible.Good luck! Edited October 2Oct 2 by RonH
October 2Oct 2 Author 1 hour ago, RonH said:Thanks for posting the photos. Awesome bike!Regarding your problem with the photos: There is a limit you can post unless you’re a paying member. However, you can still post all the pictures you want if you link them to a posting website like Flickr or Imgur.Oh yeah, do you still have the fiberglass seat pan? I’d like to buy it if at all possible.Good luck!Ahhh, I see why the probs with the photos now. Thanks for the explanation on that!RonH, I do still have the seat pan. It has many cracks that you can't see, and I've already began the repairs for that. My plans are to attempt to find a useable seat and use the seat base. Sorry about that.But you've got me interested now...... Do you have one that you are working on? If so, any pics of that?By the way, my IRC TR-011 tire came today, but I've already sent it back on the assumption that the wrong one was sent to me by mistake. IRC makes 2 types of the same model or trials tire; a TR-011TT (Tube Type), and a TR-011TL, which is for modern bikes with tubless rims. The tire that came today had the word "TUBLESS" embossed on the side of the tire, and a sticker on the tread that said "TUBLESS". I can understand someone's mistake on this deal. But if IRC has tire lettering with "TUBLESS" on each side of a tire that's meant to run an inner tube, that seems kinda dumb to me..... 🙄 Wouldn't think they'd do that???? I've not seen a Tube Type IRC TR-011 yet so I don't know......Jimmie
October 3Oct 3 21 hours ago, mr neutron said:Ahhh, I see why the probs with the photos now. Thanks for the explanation on that!RonH, I do still have the seat pan. It has many cracks that you can't see, and I've already began the repairs for that. My plans are to attempt to find a useable seat and use the seat base. Sorry about that.But you've got me interested now...... Do you have one that you are working on? If so, any pics of that?By the way, my IRC TR-011 tire came today, but I've already sent it back on the assumption that the wrong one was sent to me by mistake. IRC makes 2 types of the same model or trials tire; a TR-011TT (Tube Type), and a TR-011TL, which is for modern bikes with tubless rims. The tire that came today had the word "TUBLESS" embossed on the side of the tire, and a sticker on the tread that said "TUBLESS". I can understand someone's mistake on this deal. But if IRC has tire lettering with "TUBLESS" on each side of a tire that's meant to run an inner tube, that seems kinda dumb to me..... 🙄 Wouldn't think they'd do that???? I've not seen a Tube Type IRC TR-011 yet so I don't know......JimmieJimmie, No, I don’t have a TY but I’m looking for one. The ones I’ve seen for sale are very trashed out and nearly all of them have the seat and seat pan removed. I was just hoping to stock up on one for when I do locate a bike. No worries about you wanting to keep yours. I totally understand.Yes, you have to be very careful when ordering tires. It’s obvious that they made a mistake but it’s very easy for the purchaser to do the same thing. It’s amazing how many sellers don’t even list whether the tire is tubeless or tube type. I nearly ordered a tire that was tubeless type when I wanted tubeless. I paused the order just as I was about to push the button and decided to call. Glad I did call.Good luck on your build!RonH
Sunday at 01:02 AM4 days Author Man, what a difference this new (correct tube-type) rear tire makes. I can't conclusively say how it works in the wet, and I've only been able to ride on my small property which is mostly dry with grass. I have cones set up for figure 8 practice, and 2 trees on a hill for cambered figure 8 practice. It's a bit easier for these drills, and much easier to come to a stop and balance. Dead engine balance practice on the floor of my barn is much easier. I still have a few more "issues" to fix with the bike before I can take it to a local Trial, or even a play/practice ride.The old Dunlop I replaced was the "Trials Universal" model. I think Dunlop makes better trials tires than that model, but don't know if they still make tube-type? Anyway, it was SO STIFF, even with 5 lbs. of pressure, it didn't seem to flex much at all. Getting it off the rim seemed much harder than getting the IRC on. With the same 5 lbs. of pressure in the IRC, the IRC's sidewalls flex and spread out a good bit more.Jimmie Edited Sunday at 02:22 PM4 days by mr neutron corrected spelling errors
Sunday at 02:04 PM4 days 12 hours ago, mr neutron said:...The old Dunlop I replaced was the "Trials Universal" model. I think Dunlop makes better trials tires than that model,You are comparing Bias ply tires to Radial ply tires, competition rear trials tires are all radials. At one time they did manufacture radial trials tires in both tube and tubeless type (Pirelli did) , not sure that is still the case.... Historically tubeless tires were an extremely tight fit to bead on a rim that was not designed for tube tires. Not all rims have a safety bead. Edited Sunday at 02:09 PM4 days by lemur
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