rs 125 rattle in gear 3

[BillyMiller]

Basically i go through my gears, 1 fine 2 fine then when i get into 3 it rattles and when i get into 4 when i reach 8k revs it flys straight to 12k what could this be? thanks.

[merky aprilia]

[Vincent]

Sounds like the clutch may be slipping.
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Space Is Deep

[TGB]

if it helps the needle clip position is 4th from the bottom and the mixture is three turns out from fully in there is also a fuel filtre intergrated in to the carb. it has the same engine used in the derbi senda GPR 125.

[Drake]

most of the gpr125's are 4t, only the early ones are 2t
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was: derbi senda, aprilia sx125, nsr250 mc16, cagiva mito, cb600 hornet now: mk1 bandit, KR1S, landrover series 3 light weight 2.5 petrol, 5speed box

[Quornholio]

[TGB]

i have the data in front of me. the derbi senda GPR Rácing Réplica. is a 2t engine and has the same engine as the aprilla rs 125 with the Dell´Orto / PHVA 17.5 carb unit. perhaps i could send the data to you. as you seem to be a very funny man indeed.

[Drake]

wthe later gpr125's are 4 stroke as i looked at them, and also its not the rotax engine its the same one as the yamaha dt 125's


https://en.wikipedia.org/wiki/Derbi_GPR125
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was: derbi senda, aprilia sx125, nsr250 mc16, cagiva mito, cb600 hornet now: mk1 bandit, KR1S, landrover series 3 light weight 2.5 petrol, 5speed box

[TGB]

right first off we have limited information from the owner model year ect. second off aprillia and derbi shared the same engines for a number of years. third off the cagiva mito lawson rep did not become a CB600 the CB600 was based on the super dream 400.
and lastly i will not accept abuse.

[Quornholio]

[Drake]

[TGB]

ok so we have established a miss comunication from all parties. so lets wait and hear from the owner of the RS 125 and see what he/she says. also from what i can see the aprillia/derbi 4T GPR looks to be only 5 or 6 years old and not many sold in this country. as for my data for the aprillia RS / derbi DRD that goes up to 2006 and they are 2T. i have not come across a 4T one yet but it would be interesting to see one. im not going to get into an arguement over this as it pointless and serves not purpose to no one. so i have attached a link to aprillia manuals that covers most of them. https://www.carlsalter.com/aprilia-service-manuals.asp

[Drake]

yes but you said the aprilia and the gpr 2t's use the same engine but they dont, the aprilia's right back to the AF1 have used rotax engines, where as the gpr is using a yamaha engine, either i thick as pig shit your your just a spam bot
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was: derbi senda, aprilia sx125, nsr250 mc16, cagiva mito, cb600 hornet now: mk1 bandit, KR1S, landrover series 3 light weight 2.5 petrol, 5speed box

[TGB]

ok here is another link to the derbi workshop manual in it you will see the GPR data. just type in the code and download. its in pdf. i can only go by what is written.

https://www.carlsalter.com/download.asp?p=444

[MaybeGuy]

[TGB]

at the end of the day. it not realy a problem is it. so lets drop this argument and try to help and reassure the RS125 owner. if he wants a manual for the bike go to my link home page and download it.

[MaybeGuy]