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SunstoneRC
New Member
United Kingdom
20 Posts |
 Posted - 30 April 2010 : 11:34:04
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Its been a while since I last ran my hyper, about 9 months ago. When I took it out for a spin round the local car park it ran like a dog, no real power at all. Lots of revs but not much speed.
It's my own fault for not really looking after it as it must have been at least 6 months again before its last run (sounds like a maths equation this  ) and I hadnt given it after run oil or a basic cleanout of the carb before and afterwards.
Knowing thats its in this state, what can I do over the weekend to bring it back to life ?. Though I've had this buggy for a few years (its a hyper 7) I've really only ran it a few times at a track with a sprinkling of recreational blasts inbetween so I consider myself far from experienced in this field (well any field really  )
I thought I'd nip down to the local modelshop and pick up some a new air filter and some general cleaning stuff to try and clean it up a bit.
Can anyone offer some more advice on the kind of thing(s) I ought to purchase and what I need to do to bring my hyper back to life ?
cheers all
Steve |
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grasshopper
Senior Member
1652 Posts |
Posted - 30 April 2010 : 15:11:54
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If it's been sitting unloved and un cared for then it will probably need a good blow out - any fuel left in the engine and tank will have evaporated leaving the heavier oil based 'goop' over everything - Nitro fuel is reputedly hygroscopic(?) and attracts moisture any can lead to rusty bits if not lubed.
With the revs but no speed - clutch slipping?
Try removing the plug (and replace that anyway) whip the carb out, take the back plate and head off and soak the lot in a jar of glo-fuel. Remove, shake off excess, wipe out using lint-free cloth. Re-assemble with new glow plug. start it up and retune when hot.
Alternative - persevere with lumpy running without driving it too hard and it will eventually free itself up - then re-tune.Replace the plug anyway.
If it's a ready to run version - check all the diffs, shocks and anything else that should have oil or lube in. RTR diffs are usually greased - better to clean out and use silicon oil - supposedly allows you to 'tune' drive - but ask someone who knows about that sort of thing - I'm still learning!
Other than that - run it, they're better used than sitting.....See you Tuesday! |
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SunstoneRC
New Member
United Kingdom
20 Posts |
Posted - 01 May 2010 : 21:22:37
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thanks for the help !
I've replaced a few bits and have given it a cleanup ready for a run out tomorrow..
checked the radio gear, works fine but reckon the brakes need some work.
I was going to upgrade the radio gear after reading a review of a Spektrum controller and due the fact that I'm still running 27mhz stuff, but thought I'd ask the questions when we catchup Tuesday.
cheers again
Steve |
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grasshopper
Senior Member
1652 Posts |
Posted - 02 May 2010 : 01:23:56
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You'll find 27 MHz stuff is okay, especially as everyone else has moveds to 2.4, it leaves a lot of the AM / FM channels free.
The 2.4GHz gear is great, no more waiting round for a free frequency, no need for extra sets of crystals and they are (almost ) interference free. Can't comment on any other brands but I've used a Spektrum unit for at least two years and it's been faultless.
If your buggy is an RTR (and you haven't said yet) - not only might they need adjusting - a slightly stronger servo makes a difference too.
As you get into the sport more you'll realise how much money you could throw at it...if you've a mind to. |
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SunstoneRC
New Member
United Kingdom
20 Posts |
Posted - 03 May 2010 : 22:57:06
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I'm certainly aware of how the costs can grow and grow in this hobby. I keep looking at the stuff that I want to change on mine. Its endless and costly...
btw, my buggy is the Hyper 7 PBS RTR model.
Theres a few things I'd like to upgrade on it, mainly as you mentioned are the servo's and then the radio gear.
I do like the idea of better radio gear as I understand that a good 2.4Ghz unit can offer greater steering precision..is that right ?
Maybe next week |
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grasshopper
Senior Member
1652 Posts |
Posted - 04 May 2010 : 14:09:56
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The 'better' radio won't make much difference to your hyper 7 - I speak from experience, it's just that H7 buggies tend to be a bit vague in the steering dept because there's often a lot of play in the system, besides that comment about precision is probably more applicable to touring cars and circuit racers - we spend that much time bouncing around because we're 'off-road' and rough riding....yee-haa! |
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SunstoneRC
New Member
United Kingdom
20 Posts |
Posted - 04 May 2010 : 15:03:58
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Fair point,,so is steering simply based on luck ?
I did swap out the battery pack on my buggy to the 5 Cell variety and couldn't believe how much quicker the steering was.
The first time I took it to a track, it were embarrassing cos I had to take each corner excessively wide due to the slow response of the standard 4 battery pack that was fitted.
The shame was though that it was just after I fitted the new battery pack that the local track moved so I've never been able to see the difference on the track.
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grasshopper
Senior Member
1652 Posts |
Posted - 04 May 2010 : 15:39:55
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quote:
Fair point,,so is steering simply based on luck ?
In my case - probably yes!
But seriously, you hear people say how you need this and that to be competitive - but the truth of the matter is you can have a damn good race and have the cheapest machine on the grid.
Preparation and reliablity would be more important, especially at our level.
There are a few things that are a must, just to put you on a reasonably level playing field - but they're not all the big bucks, blingy things that people might think.
Driver skill and driving your own race makes a bit difference, you can tell when people are under pressure to drive beyond their capabilities - they crash a lot (again, experience talking!)
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SunstoneRC
New Member
United Kingdom
20 Posts |
Posted - 04 May 2010 : 16:24:54
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quote:
Driver skill and driving your own race makes a bit difference, you can tell when people are under pressure to drive beyond their capabilities - they crash a lot (again, experience talking!)
I think it was my 2nd or third time out at a track with a relatively small group of guys.
I won the final (there was only 3 rounds mind you),but not because I was fast ( i think I may have already mentioned this b4)but because I tried to stay on the track, coupled with the original battery pack, I was pants round bends, but because I limped round and the other were basically going too fast and were always off the track,, I managed to complete the most laps and won my very first meeting. I were over the moon.
I do take your point though about not getting carried away and racing your own race.When you're being lapped (in my case more than once.though I was going backwards) are flying past you, its always a tempting to try and keep up...big mistake...cost nearly 75 quid last time I tried that..
Taking it easy is the plan..... |
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