Aeromodellers Forum

2 little Indians

  • Klipkopwildlife
  • Topic Author
  • Offline
  • Administrator
  • Administrator
  • I'm supposed to be retired!
More
06 Mar 2017 17:59 #61 by Klipkopwildlife
Replied by Klipkopwildlife on topic 2 little Indians
The cylinder must be the right way round.


Those two little holes are opened by the piston skirt when it's close to top dead centre. I was surprised to see they're staggered, I suppose it's an attempt to soften the intake pulse.


No such attempt here to soften the transfer, as the piston reaches bottom dead centre and rams everything into the cylinder.


My little helper, Hex is her name, she's always around my feet so often gets called cooking fat when I fall over her.
Do it now, you may never get another chance
Attachments:
Thanks: THE BLACKBIRD, old fart, boz, Squirrelnet

Please Log in or Create an account to join the conversation.

  • Klipkopwildlife
  • Topic Author
  • Offline
  • Administrator
  • Administrator
  • I'm supposed to be retired!
More
06 Mar 2017 18:06 #62 by Klipkopwildlife
Replied by Klipkopwildlife on topic 2 little Indians
Back plate on, I've cut a piece of hardwood the stop the cylinder from shying away when I tighten the cylinder fins down.


And then the carb is on, I've put a smidgeon of Locktight on the thread, as much to seal as lock.

Do it now, you may never get another chance
Attachments:
Thanks: Quorneng, THE BLACKBIRD, old fart, boz, Squirrelnet

Please Log in or Create an account to join the conversation.

More
06 Mar 2017 20:37 #63 by Squirrelnet
Replied by Squirrelnet on topic 2 little Indians

hose two little holes are opened by the piston skirt when it's close to top dead centre. I was surprised to see they're staggered, I suppose it's an attempt to soften the intake pulse.


That makes sense, thanks Klippy I have wondered why the holes are staggered. I thought it was inaccurate drilling but all the Indian Mills I have seen now have it. Makes me wonder if the originals were the same
Thanks: boz

Please Log in or Create an account to join the conversation.

  • Klipkopwildlife
  • Topic Author
  • Offline
  • Administrator
  • Administrator
  • I'm supposed to be retired!
More
07 Mar 2017 08:25 #64 by Klipkopwildlife
Replied by Klipkopwildlife on topic 2 little Indians
It's obvious that the fin assembly has been modified, I'm guessing the thread for the compression screw stripped.


#2 has a 4BA screw, #1 has a 5mm screw.


I don't have Heli coils in 4mm but I do have this thread repair kit. The outer is about 6.5mm (1/4" Garry) the inner is 4mm


I always try and tap using this method, all too often then tap doesn't go in straight when you're doing it by hand.
Do it now, you may never get another chance
Attachments:
Thanks: boz

Please Log in or Create an account to join the conversation.

  • Klipkopwildlife
  • Topic Author
  • Offline
  • Administrator
  • Administrator
  • I'm supposed to be retired!
More
07 Mar 2017 08:33 - 07 Mar 2017 08:35 #65 by Klipkopwildlife
Replied by Klipkopwildlife on topic 2 little Indians
Thread repair is in and trimmed back to height.


I've used the old compression screw and spun it down to 4mm, then threaded it and blued it.


And the final part, screwing it down tight using soft jawed pliers and we're ready for a test run.

Do it now, you may never get another chance
Attachments:
Last edit: 07 Mar 2017 08:35 by Klipkopwildlife.
Thanks: THE BLACKBIRD, old fart, boz

Please Log in or Create an account to join the conversation.

More
07 Mar 2017 09:29 #66 by THE BLACKBIRD
Replied by THE BLACKBIRD on topic 2 little Indians
A super job Mr Klipy, im pleased im not paying the bill, :whistle: it must be about 500 quid now :evil:

Please Log in or Create an account to join the conversation.

More
07 Mar 2017 10:16 #67 by Quorneng
Replied by Quorneng on topic 2 little Indians
Yes, it all looks very nice.

"screwing down tight..." I never tightened my Mills down more than finger tight!
Maybe the mag alloy of the original crankcase gave the thread more fiction or it simply expanded more than the head as it warmed up but in never came loose.
I also suspect if it did unscrew at all the drop in compression would stop it running well before anything actually came off.
Thanks: boz

Please Log in or Create an account to join the conversation.

  • Klipkopwildlife
  • Topic Author
  • Offline
  • Administrator
  • Administrator
  • I'm supposed to be retired!
More
07 Mar 2017 10:34 #68 by Klipkopwildlife
Replied by Klipkopwildlife on topic 2 little Indians
Absolutely Simon, I think what I'm trying to say is that there's absolutely no need to grab it with a pair of water pump pliers as as happened in the past with these engines.
I'm going to move on to #2, which is the one I'm not looking forward to.
Do it now, you may never get another chance
Thanks: boz

Please Log in or Create an account to join the conversation.

More
07 Mar 2017 18:39 #69 by Firewood
Replied by Firewood on topic 2 little Indians
I have been watching the posts on producing the prop driver and at the risk of being shot down in flames this is my two pennyworth I would have turned the dia bored to size and ground a tool the profile of the slots fixed that in the tool post indexed the headstock and then wound the tool across the face cutting the grove in the face and then indexing head till all the groves were cut and the cut it of the stock with a parting tool.Hoping you all can understand my explanation.
I'm so clever that sometimes I don't understand a single word of what I'm saying.
Thanks: Klipkopwildlife

Please Log in or Create an account to join the conversation.

  • Klipkopwildlife
  • Topic Author
  • Offline
  • Administrator
  • Administrator
  • I'm supposed to be retired!
More
08 Mar 2017 06:26 #70 by Klipkopwildlife
Replied by Klipkopwildlife on topic 2 little Indians
Yes Fire, with 20/20 hindsight that's what I should have done, but then life is a learning curve! My other problem was that I'd already cut the plate outside diameter to size so I couldn't grip it really tight in the chuck without damage which could have been turned off later.
Do it now, you may never get another chance
Thanks: Firewood

Please Log in or Create an account to join the conversation.

More
08 Mar 2017 09:42 #71 by Firewood
Replied by Firewood on topic 2 little Indians
Klipkopwildlife was not meant as a criticism.
I'm so clever that sometimes I don't understand a single word of what I'm saying.
Thanks: Klipkopwildlife

Please Log in or Create an account to join the conversation.

  • Klipkopwildlife
  • Topic Author
  • Offline
  • Administrator
  • Administrator
  • I'm supposed to be retired!
More
08 Mar 2017 10:12 #72 by Klipkopwildlife
Replied by Klipkopwildlife on topic 2 little Indians
I know that Firewood, it's good to share ideas so that others can know that there's more than 1 way to skin the cat. :)
Do it now, you may never get another chance
Thanks: Firewood

Please Log in or Create an account to join the conversation.

  • Flytilbroke
  • Offline
  • Platinum Member
  • Platinum Member
  • Not Tired, long retired "Bob"
More
08 Mar 2017 10:50 #73 by Flytilbroke
Replied by Flytilbroke on topic 2 little Indians
Not planning to do any of this, but I have enjoyed looking in and learning a bit.
Have a nice Day, unless I don't like you.

Please Log in or Create an account to join the conversation.

More
08 Mar 2017 12:54 #74 by boz
Replied by boz on topic 2 little Indians
I have also found this thread very interesting, and some of you lads have some very serious machinery, in your little sheds. :)
Thanks: Klipkopwildlife

Please Log in or Create an account to join the conversation.

More
08 Mar 2017 20:09 #75 by THE BLACKBIRD
Replied by THE BLACKBIRD on topic 2 little Indians
Me to very interesting and as for the machinery wish I had some of it in my little shed, but then I would not know how to use it :silly:
Thanks: boz

Please Log in or Create an account to join the conversation.

Time to create page: 1.462 seconds