andrey-p Posted June 19, 2020 Report Share Posted June 19, 2020 Did anyone have a problem with the stripped thread for ratchet ring in hub body? I have broken two hubs in less than three years. So the problem is in this hub model or am I doing something wrong? I ride street trials and use 22:16-15 ratio. Does pro2 evo have a different ratchet ring mount thread? 1 Quote Link to comment Share on other sites More sharing options...
aener Posted June 19, 2020 Report Share Posted June 19, 2020 I've heard of a few people having this issue, but it's definitely not what you'd call common. I don't have any advice on what might be happening, but just to let you know you're not the only person ever, at least, but most people use them with no such issue. 1 Quote Link to comment Share on other sites More sharing options...
Herbertlemon102 Posted June 19, 2020 Report Share Posted June 19, 2020 (edited) i'm afraid i've had this problem, i switched back to my pro2 which has been going for years. pro4 just stripped out randomly. was really strange. gave no indication it was going. I literally have breadsticks for legs, so i wouldn't say youre the problem, but the hub. I rang Hope and theyre aware of the issue, but wouldn't replace it or even sell me a hubshell. was a bit of a bummer. Edited June 19, 2020 by Herbertlemon102 1 Quote Link to comment Share on other sites More sharing options...
Sandbugg Posted June 19, 2020 Report Share Posted June 19, 2020 (edited) I had a pro4 do this it was just after (like 2 rides after) the ratchet ring had been replaced by hope cos the pawls had chipped and mangled the ratchet ring teeth they changed the hub shell for me my hub sometimes misses a tooth / skips under low load like when I set up for something as opposed to putting the power (of which I havent much of) down As for the thread on a 2 vs a 4 the ratchet ring is a larger diameter on a 4 I belive so they can put more teeth in there Edited June 19, 2020 by Sandbugg , 1 Quote Link to comment Share on other sites More sharing options...
andrey-p Posted June 20, 2020 Author Report Share Posted June 20, 2020 Pro2 ratchet ring width is 8mm according Hopetech website, Pro4 - 7mm according to my measurements and it slightly protrudes. Maybe pro4 doesn't have enough turns of thread in aluminium body to hold steel ratchet ring. Quote Link to comment Share on other sites More sharing options...
John Shrewsbury Posted June 20, 2020 Report Share Posted June 20, 2020 Yeh done it to mine once, just sent the hub back to hope and had a new ratchet and body replaced. I used to run my chain pretty tight which may cause everything being squashed a little which might effect the ratchet area, but who knows. Quote Link to comment Share on other sites More sharing options...
dk2 Posted July 6, 2020 Report Share Posted July 6, 2020 Hi had the same problem on my pro4...sendt it back to Hope, and they fixed it...3 month later and now it skipps once in a while...changed pawls two times as they got crused. My pro2 just runs 10+years no problem...frustrating but have to get this sorted again. Quote Link to comment Share on other sites More sharing options...
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