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#1
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Need Help With Helical Diff Gears
Hello,
today I picked up a helical pinion gear for my 1/8 buggy's front diff, and also had to pick up the diff gear to go with it. When re-assembled the diff after changing out to hardened outdrives too, the diff gear and pinion will not sit correctly in the housing. Hopefully these pictures will give a clearer understanding: Hope fully you can see that the diff gear is not sitting on the pinion well, lifting it up at one side. What is causing the problem? and how can I resolve it? Thanks
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Caster Racing EX1.5 T8 1900kv & Castle Speed Control on 4s Diggity Designs CF Upper Deck VP Pro & Caster Wheels/tyres Savox SC1258 Titanium Geared HotBodies Truggy & Ho Bao Hyper 7 GX-5R .21 - Byron 20% Ofna - Proline - VP Pro - Caster Wheels/tyres Savox SC125/78 Titanium Geared Thanks to: Caster Racing USA - Team Tekin - Byron Fuels - VP Pro - Savox Website / Youtube Nene Valley Raceway |
#2
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The diff gear looks to be too thick, making the overall size of the diff bigger, so it's pushing the bearing out. Meaning it wont slot in the housing correctly.
Is it an aftermarket gear? ben
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Schumacher Racing - Reedy - Schelle - TKR - Bandicoot Bodies - MIP - Nextlevelrc - Trishbits - Moss Models |
#3
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No it's not mate, Got it today from LHS. Pinion was from caster website that LHS ordered in, and diff gear was taken from another buggy still in box at the shop.
It's just strange that the gear that comes from caster, doesn't fit the diff
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Caster Racing EX1.5 T8 1900kv & Castle Speed Control on 4s Diggity Designs CF Upper Deck VP Pro & Caster Wheels/tyres Savox SC1258 Titanium Geared HotBodies Truggy & Ho Bao Hyper 7 GX-5R .21 - Byron 20% Ofna - Proline - VP Pro - Caster Wheels/tyres Savox SC125/78 Titanium Geared Thanks to: Caster Racing USA - Team Tekin - Byron Fuels - VP Pro - Savox Website / Youtube Nene Valley Raceway |
#4
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you said it was a "helical" pinion (it does seem to look a tad helical, but only a bit) but it looks like you're using a straight cut grown gear.
well those 2 aint ever gonna match up are they! you need a straight cut pinion gear too
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JQ Racing - Ultimate Racing - SMD - Nitrolux Fuel - J Concepts - Nuclear-RC - Sandy Point Clothing - |
#5
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Quote:
It's deffo helical, both are slightly curved, they mesh perfectly fine when out of the diff housing.
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Caster Racing EX1.5 T8 1900kv & Castle Speed Control on 4s Diggity Designs CF Upper Deck VP Pro & Caster Wheels/tyres Savox SC1258 Titanium Geared HotBodies Truggy & Ho Bao Hyper 7 GX-5R .21 - Byron 20% Ofna - Proline - VP Pro - Caster Wheels/tyres Savox SC125/78 Titanium Geared Thanks to: Caster Racing USA - Team Tekin - Byron Fuels - VP Pro - Savox Website / Youtube Nene Valley Raceway |
#6
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furry muff, it does look straight cut in those pics tho
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JQ Racing - Ultimate Racing - SMD - Nitrolux Fuel - J Concepts - Nuclear-RC - Sandy Point Clothing - |
#7
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haha, indeed it does they are only slightly curved, almost not worth having as they cant improve surface area that much...
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Caster Racing EX1.5 T8 1900kv & Castle Speed Control on 4s Diggity Designs CF Upper Deck VP Pro & Caster Wheels/tyres Savox SC1258 Titanium Geared HotBodies Truggy & Ho Bao Hyper 7 GX-5R .21 - Byron 20% Ofna - Proline - VP Pro - Caster Wheels/tyres Savox SC125/78 Titanium Geared Thanks to: Caster Racing USA - Team Tekin - Byron Fuels - VP Pro - Savox Website / Youtube Nene Valley Raceway |
#8
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does it have the same amount of teeth as the pinion you took out?
is it the same diameter? were both parts for/out of the same kit as yours?
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MBModels - Schumacher Racing - Vapextech.co.uk - MRT - Savox - SMD |
#9
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I have however solved the problem now (if you can call it that). The gear I have is too BIG, It's frustrating because it is the ONLY 13t pinion gear caster list on their website. I have sent the caster support team an email notifying them about my problem and hopefully they should be able to point me int he right direction for the correct gear. The most annoying this is, I had to buy a diff gear to fit the pinion, which cost £20, and it doesn't even fit!! GRR :P
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Caster Racing EX1.5 T8 1900kv & Castle Speed Control on 4s Diggity Designs CF Upper Deck VP Pro & Caster Wheels/tyres Savox SC1258 Titanium Geared HotBodies Truggy & Ho Bao Hyper 7 GX-5R .21 - Byron 20% Ofna - Proline - VP Pro - Caster Wheels/tyres Savox SC125/78 Titanium Geared Thanks to: Caster Racing USA - Team Tekin - Byron Fuels - VP Pro - Savox Website / Youtube Nene Valley Raceway |
#10
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Quote:
then the shop sold u good not fit for purpose
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MBModels - Schumacher Racing - Vapextech.co.uk - MRT - Savox - SMD |
#11
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I do agree however, caster only list that ONE pinion on their site. Hopefully i can get this resolved in a few mins. Talking to a guy from caster now
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Caster Racing EX1.5 T8 1900kv & Castle Speed Control on 4s Diggity Designs CF Upper Deck VP Pro & Caster Wheels/tyres Savox SC1258 Titanium Geared HotBodies Truggy & Ho Bao Hyper 7 GX-5R .21 - Byron 20% Ofna - Proline - VP Pro - Caster Wheels/tyres Savox SC125/78 Titanium Geared Thanks to: Caster Racing USA - Team Tekin - Byron Fuels - VP Pro - Savox Website / Youtube Nene Valley Raceway |
#12
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Glad you're sorting it out, however annoying it gets!
This is a straight cut bevel gear. If it looks bent in an way, it won't work. The pinion in your photo looks a bit worn! As the pinion line is co-axial with the spur gear line, and the tooth is not noticeably curved, only a straight cut bevel will work. Helical (spiral) bevels are used to increase tooth area contact, and hypoid bevels are used to lower the line of the input shaft in relation to the output shaft. This is helical (spiral) and further down the same page is hypoid bevel. As you can see, the spiral is very obvious. Both are very expensive to cut, and that's why the cheaper straight cut gears are used. HTH Hope you get it sorted. Just being nosey, but when you say it's too big is it hitting the housing, or is the pinion bottoming out on the root of the spur gear? |
#13
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Quote:
Thank you for the information, both gears ARE helical, though they may not look like it. The pictures obviously don't show it too good!! Sorry about that. They do both have a very almost un-noticeable curve, though it is there. As stated above they mesh perfectly when out of the diff housing its just not fitting right in the housing. The pinion is brand new, It hasn't had any power put through it, same as the bevel diff gear. got them both today. It's too big, almost like the pinion needs to be off centred in the housing to accommodate for its diameter. It's not hitting the casing, when the diff it's self sits in the housing without the pinion installed, it's spins freely and there is no binding. Thanks mate!!
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Caster Racing EX1.5 T8 1900kv & Castle Speed Control on 4s Diggity Designs CF Upper Deck VP Pro & Caster Wheels/tyres Savox SC1258 Titanium Geared HotBodies Truggy & Ho Bao Hyper 7 GX-5R .21 - Byron 20% Ofna - Proline - VP Pro - Caster Wheels/tyres Savox SC125/78 Titanium Geared Thanks to: Caster Racing USA - Team Tekin - Byron Fuels - VP Pro - Savox Website / Youtube Nene Valley Raceway |
#14
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Issue should hopefully be resolved, I am picking up a new crown gear tomorrow morning. Will report back tomorrow.
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Caster Racing EX1.5 T8 1900kv & Castle Speed Control on 4s Diggity Designs CF Upper Deck VP Pro & Caster Wheels/tyres Savox SC1258 Titanium Geared HotBodies Truggy & Ho Bao Hyper 7 GX-5R .21 - Byron 20% Ofna - Proline - VP Pro - Caster Wheels/tyres Savox SC125/78 Titanium Geared Thanks to: Caster Racing USA - Team Tekin - Byron Fuels - VP Pro - Savox Website / Youtube Nene Valley Raceway |
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