This listing was ended by the seller because the item is no longer available.

Picture Information

Image not available
Mouse here to zoom in
Have one to sell? Sell it yourself

Details about  NEW! O.S. 91HZ Ringed Helicopter Engine 18650 FREE SHIP

NEW! O.S. 91HZ Ringed Helicopter Engine 18650 FREE SHIP
Get fast shipping and excellent service from eBay Top-rated sellers.

Find out more about the Top-rated seller program - opens in a new window or tab

99.9% Positive feedback
  • Consistently receives highest buyers' ratings
  • Ships items quickly
  • Has earned a track record of excellent service
Visit store:

Item Information

Item condition:
Error icon
3 available / 5 sold
Please enter a quantity of $qty_dummy$ or less Please enter a quantity of 1 Purchases are limited to $qty_dummy$ per buyer Please enter quantity of 1 or more Please enter a lower number Choose quantity that is less than $qty_dummy1$ or equal to $qty_dummy$ You can only choose quantity that is equal to $qty_dummy$
US $320.61
Approximately C $352.33
US $33.95 (approx. C $37.31) USPS Priority Mail International | See details
International items may be subject to customs processing and additional charges.  help icon for Shipping - opens a layer
Item location:
Champaign, Illinois, United States
Ships to:
Worldwide See exclusions
Please allow additional time if international delivery is subject to customs processing.
International shipping and import charges paid to Pitney Bowes Inc. Learn More
30 day money back, buyer pays return shipping See details
eBay item number:
Seller assumes all responsibility for this listing.
Last updated on  Feb 11, 2014 14:54:34 EST  View all revisions

Item specifics

New: A brand-new, unused, unopened, undamaged item (including handmade items). See the seller's listing ... Read moreabout the condition


STOCK# - OSMG1974 MFG# - 18650
New and unused. In the original manufacturer packaging. This ships FREE within the U.S. when using ground service. If ordering it you may add more items to your order without incurring any shipping charges if shipped within the U.S. using ground service.

          This is the O.S. .91HZ F3C Competition Helicopter Engine.

FEATURES: Designed specifically for F3C aerobatic competition
Rectangular heat sink allows engine to be enclosed entirely inside
cooling shroud
61-E carburetor with thermal insulator to block heat and a needle
valve control lever to control mixture from transmitter carburetor
has three adjustment controls that enable independent adjustment at
idling hovering and high speed
Five holes in the top of the piston route gases to the piston ring
from within to form a tighter seal with minimum blow by
Ball bearing supported crankshaft
Heat sink type backplate
Two year limited warranty through Hobby Services beginning at date of

INCLUDES: O.S. .91 HZ F3C Competition Helicopter Engine with #8 glow plug
needle control lever extra 0.2mm head gasket cap screws and
instruction manual

REQUIRES: Fuel: 10 -30 nitromethane with at least 18 lubricant. Lubricants
may be either castor or synthetic oil or castor/synthetic blend.
Field Equipment: glow starter fuel bulb fuel can filter fuel pump
hexagonal starting shaft (depending on brand of helicopter)
electric starter battery and fuel tubing
Muffler-Depending on heli

SPECS: Displacement: 0.91 cu in (14.95 cc)
Bore: 1.09 (27.7mm)
Stroke: 0.98 (24.8mm)
Output: 3.4 PS 3.35 HP @ 15 000 RPM
Practical RPM Range: 2000-16 000
Weight Without Muffler: 1.36lb (618g)
Crankshaft Size: 5/16-24
Height from crankcase bottom to top of cylinder head: 3.9 (99mm)
Height/bottom of mounting tab to top of cylinder head: 3.2 (81.2mm)
Distance between mounting holes same side: 0.98 (25mm)
Distance between mounting holes opposite side: 2.04 (52mm)
Distance between muffler screw holes: 1.6 (42mm)
Distance/bottom of mounting tab to muffler screw holes: 1.7 (42.8mm)
Length from front bearing to backplate: 3.3 (84mm)
Length from backplate to end of crankshaft: 4.9 (125.6mm)
Width of crankcase below mounting tabs: 1.7 (43mm)
Width between mounting tabs: 2.4 (61mm)

Carburetor Needle Settings:
High Speed: 2 turns out from fully closed
Mid Range: 2 turns open
Mixture Control (low speed): indentation on screw head straight up
and down (vertical)

jxs 10/14/10

 Accessories currently listed within our eBay store required to complete this item:
 Basic —
Great Planes Silicone Fuel Tubing Standard 3
Great Planes Ultra Precision Fuel Filter
Hobbico 4-Way Wrench w/Plug Storage
Building & Field —
Duratrax Glow Starter C Battery
Fuji Batteries C Alkaline Battery (2)
Tower Hobbies Hand-Crank Fuel Pump
Other accessories may be required. Please read the above notes.


International Buyers Only – Please allow 2 to 4 weeks for international deliveries. Not all international packages are shipped with tracking information. Please Note: Duties and taxes are not included in the item price or shipping charges. Please check with your local customs office prior to buying. These will be added by your local authorities upon delivery - do not confuse them for additional shipping charges. We are unable to falsify the value of the shipment because that would be illegal.

Feedback Ratings – Please contact us first if you feel that you cannot give us ratings of 5 in all categories. We make overall customer satisfaction our #1 priority and would appreciate the opportunity to earn a 5 rating.

Questions and answers about this item

No questions or answers have been posted about this item.

Seller assumes all responsibility for this listing.

Shipping and handling

Item location: Champaign, Illinois, United States
Shipping to: Worldwide
Excludes: Falkland Islands (Islas Malvinas), Brunei Darussalam, Indonesia, Laos, Malaysia, Afghanistan, Pakistan, Sri Lanka, Iraq, Jordan, Lebanon, Benin, Comoros, Ghana, Liberia, Libya, Nigeria, Somalia
Domestic handling time
Will usually ship within 1 business day of receiving cleared payment[newWindowTxt].

Return policy

Item must be returned within
Refund will be given as
30 days after the buyer receives it
Money Back
The buyer is responsible for return shipping costs.
Return policy details
See the Store Policies page within our eBay store.

Payment details

Payment method Preferred/Accepted Buyer protection on eBay
Credit card or Pre-authorized Debit through PayPal
PayPal Preferred

Seller's payment instructions

OmniModels eBay store accepts PayPal payment only. E-CHECK is not accepted. Standard delivery to the contiguous US is usually 4 to 10 business days. Order delivery to Alaska/Hawaii or APO/FPO is usually 4 to 15 business days. Standard delivery to International/Puerto Rico/Virgin Islands/Guam is 10 to 20 business days. International buyers are responsible for payment of all custom/duty/brokerage fees. If we can't refund international buyers via PayPal, an OmniModels account credit will be issued.
time left
Current bid amount
Shipping amount
Bid Count
time left
current bid
Current bid amount Approximately:
Shipping amount Approximately:
Import charges:
Import charges:
(estimated and based on max bid)
Your bid amount


Your current max bid:
Increase your chances of winning by setting a higher bid now.
Let eBay place automatic bids for you  This opens a help overlay dialogue about automatic bidding.
How does automatic bidding work?
As other bids come in, eBay will automatically raise your bid in small amounts, up to your limit. Learn More. - opens in a new window or tab
Close button. This closes the help overlay dialogue.
, up to
By submitting your bid, you'll be committing to buy this item from the seller if you are the winning bidder.
By submitting your bid, you are committing to buy this item from the seller if you are the winning bidder. You have read and agree to the Global Shipping Program terms and conditions - opens in a new window or tab. Import charges previously quoted are subject to change if you increase you maximum bid amount.
By clicking Confirm, you commit to buy this item from the seller if you are the winning bidder.
By clicking Confirm, you are committing to buy this item from the seller if you are the winning bidder and have read and agree to the Global Shipping Program terms and conditions - opens in a new window or tab. Import charges previously quoted are subject to change if you increase your maximum bid amount.
Tell us what you think 
We've made a few changes to bidding.
Were these helpful?
Bid layer is updating the contents.
Resume bidding, if the page does not update immediately.
FREE shipping
See item description
(Enter ##1## or more)
(Enter more than ##1##)
Your max bid:
You've been outbid. Don't let it get away - place another bid.
You've been outbid by an automatic bid placed earlier by another bidder.
You're the highest bidder on this item!
You're the first bidder on this item!
You're the highest bidder on this item, but you're close to being outbid.
This auction is almost over and you're currently the high bidder.
You're the high bidder on this item, but the reserve price hasn't been met yet.
You've been outbid by someone else.
You can still win! Try bidding again.
You've been outbid by someone else's max bid.
You can still win! Try bidding again.
Your bid wasn't accepted because it's the same as someone else's bid.
Try raising your max bid.
You're the highest bidder!
To increase your chances of winning, try raising your bid.
You're the first bidder. Good Luck!
You're still the highest bidder!
You increased your max bid to
Please enter your bid again.
Enter a valid amount for your bid.
Enter a bid that is the minimum bid amount or higher.
You have to bid at least
Sorry, you can't lower your maximum bid once it's placed.
This seller requires the buyer to have a PayPal account to purchase this item. Get a PayPal account here .
Your bid is the same as or more than the Buy It Now price. You can save time and money by buying it now.
Place bid
Review and confirm your bid
Bid confirmation
Increase max bid
Time left:
Current bid:
(approximately ##1##)
Your maximum bid:
(approximately ##1##)
Increase your maximum bid:
By clicking 1 Click Bid, you commit to buy this item from the seller if you're the winning bidder. Learn moreabout 1-click bid - opens in a new window or tab
(approximately ##1##)
Winning bid:
Starting bid:
Congrats! The auction has ended and you're the winner.
The auction has ended, but the reserve price was not met.
Sorry, the auction has ended and you were outbid.
Good news, you're the high bidder.
Sorry, you've been outbid.
You're the high bidder, but the reserve price is not met.
Please enter a higher amount than the current bid.
Maximum bids cannot be lowered once submitted.
Please enter a valid number.

Additional site navigation